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Share-based Compensation | 3 Months Ended
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Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Share-based Compensation | Share-based Compensation Share-based compensation expense was as follows:
For the three months ended March 31, | 2018 |  | 2017
Stock options, net of estimated forfeitures | $ | (7,166 | ) |  | $ | 19,281 |
Restricted stock awards | 3,410 |  |  | 3,107 |
Total | $ | (3,756 | ) |  | $ | 22,388 |
The negative stock options expense for the three months ended March 31, 2018 relates to the correction of an immaterial error recorded in the prior year.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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